Answer:
Option B. is correct
Explanation:
ATP stands for Adenosine triphosphate.
ATP is an end product of the following processes:
1. Photophosphorylation
2. Cellular respiration
3. Fermentation.
When living cells break down food molecules, energy is stored as ATP.
Adenosine triphosphate is the main source of energy of the cell
So, option B. is correct.